JP3389878B2 - IDE device insertion / extraction device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an IDE device insertion / removal apparatus and method that does not bring down a computer main body by providing a dummy circuit when hot-plugging / unplugging an IDE device.

[0002]

2. Description of the Related Art IDE (Integrated Dev)
The method of inserting / removing an ice electronics device is particularly used for a notebook type personal computer. Inserting / removing not only the IDE device but also the device without turning off the power may lead to destruction of the device itself due to an overcurrent.

To solve this problem, an example of a conventional device insertion / removal method is disclosed in Japanese Patent Laid-Open No. 10-187304.
It is described in Japanese Patent Publication No. The computer system described in this publication and the method for controlling peripheral device insertion / removal in the system include a computer body, a docking station, and a docking connector that connects the computer body and the docking station, as shown in FIG.

The computer main body is a PCI in which a CPU and a main memory are connected via a host / PCI bridge.
Bus and ISA (Industry Standard)
Architecture) Connect to the bus and
By receiving the ct signal, it recognizes that the selectable bay is connected and notifies the control controller,
Internal PCI-IS that recognizes that the selectable bay is removed when a signal is received and notifies the controller
An A-bridge device, a switch for switching the selectable bay via the ISA bus and the connector by switch control from the controller, and an internal PCI-IS
A controller that performs switch control of the switch by notification from the A bridge device, an HDD or a C
A selectable bay that is composed of a D-ROM or the like and is connected to the computer main body via a connector, and an eject signal is output to the internal PCI-ISA bridge device when pressed when the selectable bay is removed, and is selectable when the removal signal is received. The bay is ejected from the connector.

In the device insertion / removal method disclosed in Japanese Unexamined Patent Publication No. 10-187304, the HDD / CD-ROM is broken during hot dock / hot undock, or the signal line of the ISA bus and IDE I / F control line. It avoids the problem that the system stops due to the disturbance of.

Further, an example of a hot-line insertion / removal method for detecting and backing up a defective access at the time of insertion / removal of a conventional device is described in Japanese Patent Laid-Open No. 9-311742.
An information processing apparatus and a hot-swap method thereof described in this publication include a printed board having circuits such as an information processing section and a storage section, and a system bus connected to a plurality of printed boards for read or write access. A battle insertion / removal method for inserting / removing a printed board in a processing device from a system bus, further comprising an unauthorized access monitoring circuit for monitoring unauthorized access to a predetermined printed board and a dummy retry circuit for retrying an access cycle when an unauthorized access is detected. Have. As a result, the information processing apparatus does not cause erroneous operation even if the printed board is inserted or removed during access, and erroneous operation does not occur. Further, in this information processing apparatus, the output end of the signal output on the system bus when the printed board is inserted becomes high impedance.

[0007]

[Patent Document 1] Japanese Patent Application Laid-Open No. 10-1873
The computer system and the method for controlling the insertion / removal of peripheral devices in the system described in Japanese Patent Publication No. 04-2004 have a HDD / CD-ROM drive that uses a software driver so that an IDE device such as an HDD or a CD-ROM operates normally after hot docking. The ROM must be initialized. In some cases, the hot dock / hot undock processing by the software driver does not operate normally due to a difference in OS, a difference in CD-ROM drive type, and the like. In that case, there arises an inconvenience that it is necessary to create a software driver compatible with various OSs or adapted to various device types.

Further, the information processing apparatus and the hot-line insertion / removal method thereof disclosed in Japanese Patent Laid-Open No. 9-311742 cannot insert / remove the printed board until the reading / writing is completed. At this time, the insertion / removal causes a malfunction of the information processing apparatus. Further, if the power is turned on and off while the device is removed, the information processing device may treat the device as if there is a removed printed board, but may cause a problem in the device by not returning a corresponding signal.

It is an object of the present invention to provide an IDE device inserting / removing apparatus and method for preventing a system down of a computer main body by providing a dummy circuit when the device is inserted / removed from a hot line.

[0010]

DISCLOSURE OF THE INVENTION An IDE device insertion / extraction apparatus of the present invention is a docking apparatus having a device for storing a processing apparatus and method and / or a storage apparatus and method, and a first connector for connecting to the apparatus. A device and a second connector for connecting via the first connector of the docking device, detecting the presence or absence of the docking device, supplying power when the docking device is connected, An information processing device for outputting a dummy signal to the control system, when the docking device is connected to a bus for master / slave connection and the docking device is removed according to an instruction, as if the docking device is present. And

The IDE device insertion / removal method of the present invention comprises a processing device and method and / or a storage device and method,
A docking IDE device having a device for storing the docking IDE device, an information processing apparatus having a power supply source for the docking IDE device and a bus connected to a control system, and an IDE device inserting / removing apparatus. An IDE device insertion / removal method, which detects the presence or absence of the docking device, supplies power when the docking IDE device is connected, connects the docking IDE device for master / slave connection to the bus, and When the docking IDE device is removed, a dummy signal as if the docking IDE device is present is output to the control system.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention provides a peripheral device of a personal computer that does not support hot-plugging / unplugging called hot dock / hot undock by providing a dummy IDE device on an IDE interface in the personal computer. The feature is that hot dock and hot undock are possible.

The configuration of the embodiment of the present invention will be described in detail with reference to FIG. FIG. 1 is a block diagram showing the configuration of an IDE device insertion / removal device according to the present invention. A slave IDE device 10 such as a DVD, a hard disk drive, and a CD-ROM drive, and a connector 12 which is an input / output terminal connected to the slave IDE device and for exchanging data with an external device are provided for inserting / removing into / from the external device. The docking IDE device 14, which is a device, and the connector 16 that can be connected to the connector 12 when the docking IDE device 14 is connected, and the docking I device 14 is instructed by connecting the connector 12 and the connector 16.
Power is supplied to the DE device 14, the bus is connected so that the slave IDE device 10 can operate similarly to other devices, and the docking IDE is instructed by the user.
When disconnecting the device 14, the information processing apparatus 18 is provided to stop the power supply and put the bus or the like in a pseudo state such that some device is connected so as not to stop the system.

The information processing apparatus 18 is connected to the docking power supply circuit 20 for supplying power to the docking IDE device 14 according to an instruction, and the docking IDE device 14 according to a change in the Detect signal sent through the connectors 12 and 16. The communication of data between the slave IDE device 10 via the connectors 12 and 16 and an IDE bus for master / slave connection by transmitting an instruction to start power supply to the docking power supply circuit 20 upon detection. The docking IDE bus is connected, and when a change in the Eject signal is detected, an Undock signal is output, the power supply circuit 20 for docking is instructed to stop the power supply, and the IDE bus and the IDE bus for docking are disconnected. , Power supply circuit 20 for docking and IDE for docking
The dummy IDE device 22 that puts the bus and the high impedance state, and the ejected by the user turning on the device
The signal changes, the eject switch 24 notified to the dummy IDE device 22, and the dummy IDE device 22.
And an eject mechanism 26 for removing the docking IDE device 14 from the connector by a built-in motor or spring in response to an Undock signal from the.

Further, the information processing device 18 connects to the IDE bus an IDE controller 28 for controlling the entire device and further connected to a CPU or the like via the bus, and a master IDE device 30 such as a DVD, a hard disk drive or a CD-ROM drive. To do.

The dummy IDE device 22 is an interface between the IDE controller 28 and the docking IDE device 14.
Located on the DE bus. Usually, IDE devices can be connected up to two by one bus by connecting master / slave on the bus. In the present embodiment, the dummy IDE device 2 is provided on the bus having the slave IDE device 10 built therein and connected to the docking IDE device 14.
2 is arranged to separate the IDE bus from the docking IDE bus. As a result, even if the docking IDE device 14 is hot docked or hot undocked, the waveform of the signal on the IDE bus is not affected and the master IDE device 30 is not adversely affected.

The dummy IDE device 22 is a Detec
In the state of the t signal, it is determined whether the docking IDE device 14 is connected. When the docking IDE device 14 is not docked, the dummy IDE device 22 communicates with the IDE controller 28 instead of the docking IDE device 14,
Docking IDE for the controller 28
Make device 14 appear to be there. Actually docked I
When the DE device 22 is accessed, the IDE controller 28 indicates that operations such as data transfer cannot be performed.
Notify and work to prevent the system from hanging. Further, the Detect signal serially includes information such as the type and name of the slave IDE device 10.

When the docking IDE device 14 is not connected to the dummy IDE device 22, the dummy IDE device 22 keeps the docking IDE bus and the docking power supply at high impedance, and an overcurrent flows at the moment of hot docking.
Make sure that the docking IDE device 14 is not damaged. The docking power supply is generated by the docking power supply circuit 20, and the power ON / OFF operation is controlled by the power supply control signal from the dummy IDE device 22.

When the docking IDE device 14 is hot docked, the dummy IDE device 22 is
The docking power supply is turned on when the docking IDE device 14 is recognized by the change of the tect signal.
N, and the docking IDE bus is enabled. The dummy IDE device 22 resets the docking IDE device 14 and sets the dummy ID device in advance.
The initial setting value for the docking IDE device 14 stored in the E device 22 is written in the docking IDE device 14 to enable operation. After that, the IDE controller 28 connects the IDE bus and the docking IDE bus to the docking IDE device 14 at a timing when the IDE bus is not accessed. With this series of operations, the IDE
The controller 28 can control the docking IDE device 14.

When the docking IDE device 14 is hot-undocked, first, the user pushes the eject switch 24 to change the Eject signal. The dummy IDE device 22 disconnects the IDE bus and the docking IDE bus at a timing when there is no access between the docking IDE device 14 and the IDE controller 28. After that, the dummy IDE device 22 issues a head retract command or the like to the docking IDE device 14, and then sets the docking IDE bus and the docking power supply to high impedance. After that, the dummy IDE device 22 notifies the eject mechanism 26 to remove the docking IDE device 14 by the Undock signal. The eject mechanism 26 is connected to the docking IDE via the connector 16 by an internal motor or the like.
Disconnect the connector 12 on the device 22.

As the eject mechanism, a motor or the like may be used, or a spring or the like may be used. Also, LE
The user manually docks I by flashing D or sounding a buzzer to notify the user that it may be removed.
The DE device may be removable.

Next, the configuration of the dummy IDE device is shown in FIG.
Will be described in detail with reference to. FIG. 2 shows the dummy I of the present invention.
It is a block diagram showing the structure of a DE device. Dummy I
The DE device 22 switches the input / output of the docking IDE bus and the dummy IDE device 22 by a switch signal, and the switch signal of the input / output of the internal bus from the switch 32 and the IDE bus to the IDE controller 28. A switch 34 for performing switching by means of an internal bus from the switch 36, a switch 36 for connecting the switch 32 and the switch 34 by an internal bus and switching input / output of the internal bus to / from the register and the control system by a switch signal, , And input the Detect signal and the Eject signal,
Power control signal and Undoc depending on which signal changes
and a control circuit section 38 for outputting the k signal and outputting the switch signals to the switches 32, 34 and 36 for switching.

The register and control circuit section 38 controls the switches 32, 34 and 36 as described above, and in addition, D
A power supply control signal and an Undock signal are generated according to the states of the ECT signal and the Eject signal. The register and control circuit unit 38 stores the setting values for the docking IDE device 14, and replaces the IDE controller 28 with
Initialization is performed immediately after the hot dock of the docking IDE device 14. Further, the register and control circuit unit 38
Replaces the docking IDE device 14 when the docking IDE device 14 is not installed.
It has a function of communicating with the E controller 28.

Next, the operation of the embodiment of the present invention will be described in detail with reference to FIGS. FIG. 3 shows the ID of the present invention.
It is FIG. 1 showing the flowchart of operation | movement of an E device insertion / extraction apparatus. FIG. 4 is a second diagram showing a flowchart of the operation of the IDE device insertion / extraction device of the present invention. FIG. 5 is a third diagram showing a flowchart of the operation of the IDE device insertion / ejection device of the present invention.

The IDE device insertion / removal device turns on the device power.
When it is N, it recognizes ON and starts up. Dummy I
The DE device 22 determines the presence or absence of the docking IDE device 14 by the Detect signal (step A
1). The Detect signal has a potential that changes to 0 V when the docking IDE device 14 is mounted and 5 V when the docking IDE device 14 is not mounted.

As a result of the judgment in step A1, the dummy IDE
When the device 22 recognizes that the docking IDE device 14 is absent, the docking IDE bus is kept in the high impedance state (step A2). Then, the dummy IDE device 22 turns the docking power source 20 high.
The impedance state is maintained (step A3). Keeping the high impedance state means that the docking IDE device 14 has an overcurrent at the moment when it is hot docked.
This is to prevent the circuit components inside the docking IDE device 14 from being destroyed.

Next, the dummy IDE device 22 is docked to the master IDE device 30.
It notifies that the slave IDE device 10 in 4 is connected (step A4). This is a necessary process performed between two IDE devices that are master / slave connected on the IDE bus. In reality, since the docking IDE device 14 is not connected, the dummy IDE device 22 is replaced by the slave IDE device 10.
The above-mentioned operation is performed instead of. Also, slave ID
The information output from the E device 10 to the IDE controller 28 includes the type of IDE device (CD-ROM drive, hard disk drive, etc.), name, vendor name, and the like. This information is the dummy ID in advance.
Save it in the E device.

If the slave IDE device 10 is not mounted, the dummy IDE device 22 instead of the slave IDE device 10 outputs these pieces of information to the IDE controller 28 (step A).
5). This operation is necessary to allow the incorporation of software drivers after the OS has booted. In addition, the dummy IDE device 22 stores the setting values for the slave IDE device 10 by the IDE controller 1 in the dummy IDE device 22 and the control circuit unit 3.
It is written in the register 8 (step A6). The set values are PIO transfer mode settings, DMA transfer mode settings, standby timer settings, etc. when the slave IDE device 10 is a hard disk drive. These setting values are written in a register in the dummy IDE device 22, and when there is a hot dock of the docking IDE device 14, the operation is written in the slave IDE device 10 in place of the IDE controller 28.

With the above, the flow from the power-on of the device to the initial setting when the docking IDE device 22 is not mounted is completed (step A7).

If the user mistakenly does not mount the docking IDE device 14 and accesses the docking IDE device 14 such as a file transfer, the dummy IDE device 14 responds and the device Do not let the system stop due to no response from the system.

When the docking IDE device 14 is mounted before the power supply of the apparatus is turned on, the dummy IDE device 22 turns on the docking power supply 20 and sets the ID.
Connect the E-bus and the docking IDE bus. As a result, the IDE controller 28 and the docking IDE device 14 can be normally accessed. In addition, the dummy IDE device 22 is the docking IDE device 14
The same value as the setting value for is stored in the register. This setting value is necessary when the user repeats hot dock / hot undock many times, for example, when the docking IDE device 14 is hot undocked again after hot undocking, so always save it in the dummy IDE device 22. Keep it.

Next, the hot dock will be described with reference to the flowchart of FIG. Dummy IDE device 2
2 recognizes that the docking IDE device 14 has been hot docked due to the change in the Detect signal (step A8). After confirming that the IDE controller 28 is not accessing the dummy IDE device 22, the dummy IDE device 22 disconnects itself from the IDE bus and connects to the docking IDE bus (step A).
9). The dummy IDE device 22 turns on the docking power source 20 according to the power source control signal (step A1).
0). The dummy IDE device 22 is a docking IDE.
The device 14 is reset, and the setting values previously saved in the register are docked to the IDE device 14
Write to (step A11). After that, the IDE bus and the docking bus are connected (step A12), the docking IDE device 14 becomes operable, and the hot dock ends.

Next, the hot undock will be described with reference to the flowchart of FIG. When the eject switch 24 is pressed by the user (step A17), the dummy IDE device 22 receives the change of the eject signal, and starts the hot undock process for the docking IDE device 14 (step A18). Dummy ID
The E device 22 confirms that the IDE controller 28 is not accessing the docking IDE device 14, and then issues a head retract command or the like to the docking IDE device 14 (step A19). After that, the dummy IDE device 22 sets the docking IDE bus to high impedance, and also sets the docking power supply 20 to high impedance by the power supply control signal (step A20). The dummy IDE device 22 is
The eject mechanism is operated by the Undock signal,
The connector 12 of the docking IDE device 14 is removed from the connector 16 (step A21).

Next, the dummy IDE device 22 of the present invention
The operation of the three internal switches will be described in detail with reference to FIG. FIG. 6 is a diagram showing the switching operation of the switch of the dummy IDE device of the present invention. Here, the switching operation of the three switches of the dummy IDE device 22 is defined as one in which all or two of the switches 32, 34, and 36 are not turned off at the same time. Use the setting that turns on all or two at the same time.

Switch 32 = ON, switch 34 = OF
F, switch 36 = ON, docking IDE
Register and control circuit unit 38 via bus and internal bus
And connect. In this state, when writing the initial settings to the docking IDE device 14 immediately after the hot dock,
Alternatively, this is an internal bus connection operation of the dummy IDE device 22 when a head retract command to the docking IDE device 14 is issued immediately before hot undock.

Switch 32 = OFF, switch 34 = O
When N and the switch 36 = ON, the register and control circuit unit 38 are connected via the IDE bus and the internal bus. This state is the internal bus connection operation of the dummy IDE device 22 when the docking IDE device 14 is not mounted.

Switch 32 = ON, switch 34 = O
If N and the switch 36 = OFF, the IDE bus is connected to the docking IDE bus via the internal bus. This state is the internal bus connection operation of the dummy IDE device 22 when the docking IDE device 14 is mounted.

Switch 32 = ON, switch 34 = O
When N and the switch 36 = ON, the register / control circuit unit 38 and the docking IDE bus are connected via the IDE bus and the internal bus. This state is docking ID
This is an internal bus connection operation at the time of initial setting to the docking IDE device 14 by turning on the power with the E device 14 mounted. At this time, the register and control circuit unit 38
Accepts only write operations.

Next, another embodiment of the present invention will be described in detail with reference to FIG. FIG. 7 is a block diagram showing the configuration of another embodiment of the IDE device insertion / ejection device of the present invention. Here, as an example, the docking device 40 includes a floppy disk drive 42 and a new ID circuit 44.

The ID circuit 44 is used for the dummy IDE device 2
2 stores information such as a device type, a name, and a vendor name for enabling recognition of what type of docking device is connected. Dummy IDE device 2
2 indicates the IDE based on the information stored in the ID circuit 44.
Even if you enter a device other than the device, you will be able to identify it. This makes it possible to support hot dock / hot undock for devices other than IDE.

When the docking device 40 is hot docked, the dummy IDE device 22 operates in the ID circuit 4
The type of docking device is identified by an ID signal including a serial signal of information such as the type, name, and vendor name of the device based on the information of 4. A serial bus or the like is used for the ID signal. When the hot docked device is the floppy disk drive 42, the dummy IDE device 22 connects the docking bus and the floppy disk bus. The floppy disk controller 46 can access the floppy disk drive 42.

If initial setting values corresponding to various devices are required, a ROM 48 is prepared,
Initially set the necessary initial setting values for each device
Prepare in OM48. Dummy IDE device 22
Reads initial value data from the ROM 48 as necessary and sets it in the docking device 40.

Next, another embodiment of the present invention will be described in detail with reference to FIG. FIG. 8 is a block diagram showing the configuration of still another embodiment of the IDE device insertion / ejection device of the present invention. It is possible to use a plurality of dummy IDE devices 22 in one system. FIG. 8 shows a case where the dummy IDE device 22 is also mounted on the secondary IDE bus. Accordingly, it is possible to support hot dock or hot undock of two different docking IDE devices at the same time. Note that the dummy ID
It is possible to use the same number of E devices 22 as the maximum number of IDE devices that can be controlled by the IDE controller 28.

[0044]

The IDE device insertion / extraction device of the present invention is
By providing a dummy IDE device on the DE bus, it becomes possible to hot dock and hot undock the IDE device.

If the IDE device is not installed, a dummy IDE device keeps the IDE bus and power supply high impedance. Further, the dummy IDE device also communicates with the IDE controller instead of the IDE device.

At the hot dock of the IDE device,
The dummy IDE device connects the bus after writing the setting value to the IDE device. When the IDE device is hot-undocked, the dummy IDE device issues a head save command to the IDE device to keep the IDE bus and power supply in high impedance.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of an IDE device insertion / removal device according to the present invention.

FIG. 2 is a block diagram showing a configuration of a dummy IDE device of the present invention.

FIG. 3 is a first diagram showing a flowchart of the operation of the IDE device insertion / ejection device of the present invention.

FIG. 4 is a second diagram showing a flowchart of the operation of the IDE device insertion / ejection device of the present invention.

FIG. 5 is a third diagram showing a flowchart of the operation of the IDE device insertion / ejection device of the present invention.

FIG. 6 is a diagram showing a switching operation of a switch of the dummy IDE device of the present invention.

FIG. 7 is a block diagram showing the configuration of another embodiment of the IDE device insertion / ejection device of the present invention.

FIG. 8 is a block diagram showing the configuration of still another embodiment of the IDE device insertion / ejection device of the present invention.

FIG. 9 is a block diagram showing a configuration of a conventional insertion / extraction control system.

[Explanation of symbols]

10 Slave IDE device 12 connectors 14 Docking IDE device 16 connectors 18 Information processing equipment 20 Docking power circuit 22 Dummy IDE device 24 eject switch 26 Eject mechanism 28 IDE controller 30 Master IDE device 32 switch 34 switch 36 switch 38 register and control circuit unit 40 docking device 42 floppy disk drive 44 ID circuit 46 floppy disk controller 48 ROM

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Claims (8)

(57) [Claims] 1. A a device having a processor and / or storage device, a first for connecting the device to the device
A docking IDE device having a connector and a second connector for connecting via the first connector of the docking IDE device, the presence or absence of the docking device is detected, and the docking IDE device is connected. When the docking IDE device is connected to the bus for master / slave connection and the docking IDE device is removed by an instruction, a dummy signal as if the docking IDE device is present to the control system. An information processing device for outputting the docking IDE device, wherein the information processing device is a docking power supply circuit that supplies or stops power supply according to a signal of power supply when the docking IDE device is connected, and removal of the docking IDE device. When you receive the instructions, To detect the connection of the docking IDE device and the ejecting means for disconnecting the first connector from the second connector when the removal permission signal is acquired, and outputs the power supply signal when connected. Then, when the docking IDE device and the IDE bus are connected to each other by master / slave, and the ejecting signal is input from the ejecting means, the docking IDE device and the IDE
The bus is disconnected, the power supply signal is output to stop the power supply, the removal permission signal is output, the docking power supply circuit and the docking IDE device side IDE.
A dummy IDE device for keeping the bus in a high impedance state, wherein the dummy IDE device connects the IDE bus on the docking IDE device side and the first internal bus of the dummy IDE device by a first switch signal. A first switch for switching; a second switch for switching the first internal bus and the IDE bus by a second switch signal; and a third switch for connecting the first internal bus and the second internal bus. A third switch that switches according to the switch signal, and a signal that outputs the first, second, or third switch signal, and detects whether or not the docking IDE device is connected to the docking IDE device. Information is stored, the removal signal is input, the power supply signal and the removal permission signal are input. IDE device insertion apparatus characterized by having a register and a control circuit section for outputting a. 2. The IDE device inserting / removing apparatus according to claim 1, wherein the docking IDE device is a hard disk, a CD-ROM, a buffer and a control circuit. 3. The docking ID when the device stored in the docking IDE device does not have at least the individual information of the device itself.
The IDE according to claim 1 or 2, further comprising a storage unit that stores the individual information in the E device.
Device insertion / extraction device. Wherein said individual information, the type, IDE device insertion device according to any one of claims 1 to 3, characterized in that the name and vendor name. Wherein said information processing apparatus and said docking IDE
5. The IDE device insertion / removal device according to claim 1, wherein a plurality of devices are connected to the bus by master / slave connection. Wherein said dummy IDE device stores the initial setting value for said docking IDE devices, the initial setting value, according to claim 1, characterized in that writing to the docking IDE devices Hot Dogs The IDE device insertion / extraction device according to any one of 1. 7. The dummy IDE device issues a head retract command to the docking IDE device when the removal signal is input from the ejecting means. Of I
DE device insertion / extraction device. Wherein said dummy IDE device, according to claim 1, characterized in that when said docking IDE device is not mounted, in place of the docking IDE device communicates with a predetermined IDE controller
7. The IDE device insertion / extraction device according to any one of 7.